New User

joined:Jan 14, 2019
posts:3
votes: 1

@Runfun It is optional. Third-party Impression Url is to be used if a 3rd-party tracking service needs to track the impression.

But please also note that If you implement the JS Tag as Third party code, discrepancy between DFP and your third party server may be up-to 20%. To avoid that, make sure you insert Macro to track the clicks and impression more accurate.

New User

joined:Jan 14, 2019
posts: 3
votes: 1

They're big company, they got hundred and hundred partners (agency/adnetwork) all around the world to help them take care of their customers (like you and me) so it is better to find one of those partners to ask if having issues or questions. I believe they do have staffs to directly support for customers but they should be very big one.